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dc.contributor.authorKlimach, Stefan
dc.date.accessioned2020-12-03T12:10:37Z
dc.date.available2020-12-03T12:10:37Z
dc.date.issued2020-10
dc.identifier.citationJ Plast Surg Hand Surg. 2020 Oct 30:1-4. doi: 10.1080/2000656X.2020.1838915. Epub ahead of print.en
dc.identifier.urihttp://hdl.handle.net/20.500.12904/851
dc.description.abstractThe angle between the commisure-commisure and the endocantus-commisure lines (CCE angle) is approximately equal to the contralateral angle. A computerised technique for assessing the gross symmetry and position of the lips by comparing left- and right-sided CCE angles was developed. This study established (1) the repeatability of computerized CCE angle measurement; (2) mean CCE angle magnitudes in healthy controls and suggest a "normal" reference range. Two authors independently measured CCE angles on frontal repose facial photographs of 104 volunteers on three separate occasions using facial analysis software. Twenty right-sided hemifaces with the largest CCE differences were then mirrored in the sagittal plane to produce symmetrical photographs. Measurements were repeated by a single author. There was high agreement of angle measurements between authors (inter-rater ICC of 0.89) and within each authors' repeated measurements (intra-raters ICCs of 0.85 and 0.77). Differences in the mean right and left-sided CCE angles in controls were small but statistically significant (82.4° and 81.7°, respectively, mean absolute difference 2.2 ± 1.7°, p < 0.05). The mean absolute differences had a skewed distribution. The 2.5th and 97.5th centiles were therefore set as limits of the range of asymmetries which could be regarded as "normal" (95% reference range, or 95% reference interval): 0.2°-6.2°. Measurements of opposing CCE angles in symmetrical mirrored images were similar (82.4° versus 82.3°, mean absolute difference 0.6°, p > 0.05). In conclusion, computerised CCE angle measurement is highly repeatable and may be a useful tool with which to assess gross resting lip symmetry.en
dc.language.isoenen
dc.subjectQuantitativeen
dc.subjectAsymmetry Gradingen
dc.subjectFacial Analysisen
dc.subjectFacial Asymmetryen
dc.subjectFacial Palsyen
dc.titleA simple computerised technique for estimating resting lip position and symmetryen
dc.typeArticleen


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